A fast chromatographic determination of formaldehyde and acetaldehyde from the feed-in of pentaerythritol production was reported.

Gas chromatography ( GC ) technology was used to analyze the acetaldehyde in engine exhaust gas.

介绍了利用气相色谱分析技术分析发动机尾气的方法.

Photocatalytic degradation products of acetaldehyde included acetic acid, carbon dioxide and H 2 O vapor.

气态乙醛光催化降解产物包括乙酸 、 CO2和H2O等.

Gas is a very important analysis way, which is analyse ethanol and acetaldehyde in the experiment.

在发动机尾气测试过程中, 通常我们只能测量排气中的总碳氢,并不知道排气中的乙醇和乙醛的具体含量.

The necessary material of 2-( 2-methoethyl ) acetaldehyde diethyl acetal was synthesized in addition.

另外还合成了必需原料 2- ( 2- 甲氧基乙氧基 ) 乙醛二乙醇缩醛.

A colorless liquid polymer, C 6 H 12 O 3, of acetaldehyde, used as a solvent and a sedative.

仲(乙)醛,三聚乙醛一种用作溶剂和镇定剂的无色液体聚合物, c6h12o3.

The concentration of ethanol and acetaldehyde in Meiguixiang grape after 120 day storage was studied.

研究了不同极值气体条件下贮藏过程中,玫瑰香葡萄果实内乙醇和乙醛含量的变化规律.

Pressure distillation used in acetaldehyde production can save energy markedly.

将加压蒸馏技术应用于乙醛生产,节能效果显著.

Acetaldehyde almost exists ubiquitously and is harmful to people.

乙醛广泛存在于环境中,危害人体健康.

Perfume Features: The main tone of acetaldehyde rose floral notes.

香水特色: 以玫瑰为主调的乙醛花香调.

Alcohol dehydrogenase An enzyme that converts ethanol into acetaldehyde ( ethanal ).

醇脱氢酶:把乙醇转化为 乙醛 的酶.

During alcoholic fermentation acetaldehyde acts as a hydrogen acceptor instead of oxygen.

在这个过程中乙醛取代了氧作为氢的受体.

The corresponding reaction of acetaldehyde is subject to general base catalysis.

乙醛相应的反应服从广义的碱催化.

This paper discussed three methods of producting vinyl etherspreparation from acetylene, dehydrohalogenation and acetals.

论述了乙烯基醚类化合物的三种主要制备方法乙炔法 、 脱卤化氢法和缩醛热分解法.

This paper reviewed the research development and synthesis of acetals and ketal flavors.

综述了缩醛(酮)反应的研究进展,重点介绍了缩醛(酮)类香料的合成方法.

Sorbitol acetals is the most one kind of the nucleating agents for polypropylene crystallization.

山梨醇缩醛是最重要的聚丙烯成核剂之一.

Using the same catalyst in THF acetals could be converted to the corresponding carbonyl compounds efficiently.

而在四氢呋喃和水的混合溶剂中,使用同样的催化剂,则可以高效率地实现上述反应的逆转化过程.

The hydroxyl groups can be changed into esters , ethers , acetals and ketals, etc.

最常用的羟基保护基可归纳为三类:酯类 、 醚类和缩醛或缩酮类.

Eight acetals ( Ketals ) were synthesized under the optimal conditions.

在最佳条件下,合成了八个缩醛 ( 酮 ) 化合物.

The yields of other cyclic acetals were between 62.

并在此条件下合成了多种环缩醛,收率62.

The proposed labeling changes represent the latest headache for acetaminophen.

标记改进提案列举了最近由扑热息痛引起的大麻烦.